INFINOA   26585
INSTITUTO DE FISICA DEL NOROESTE ARGENTINO
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Geomagnetic storms effects over O3 and NOx in South Atlantic Magnetic Anomaly Zone
Autor/es:
PATRICIA FERNÁNDEZ DE CAMPRA; GUSTAVO A. MANSILLA; MARTA M. ZOSSI; ELDA M. ZOTTO
Lugar:
Buenos Aires
Reunión:
Conferencia; XI Conferencia Latinoamericana de Geofísica Espacial (XI COLAGE); 2018
Institución organizadora:
Asociación Latinoamericana de Geofisica Espacial (ALAGE)
Resumen:
The low magnetic field in the South Atlantic Magnetic Anomaly (SAMA) zone facilitates the entrance of high-energy particles from the magnetosphere. The presence of SAMA leads to the fact that particles drifting around the Earth in closed orbits can be quasi-trapped instead of being stably trapped or precipitating. The effects over total ozone and NOx and ozone profiles, from 20 to 60 km, in four different stations located in SAMA zone, during and after intense geomagnetic storms, have been analyzed in this work. Data of UARS-HALOE and TOMs are used. The results show that the effects depend on the intensity of the storms. In some cases, the total ozone shows a statically significant decrease, but in others, the depletion is not significant. In the case of the ozone profile from TOMs data, there are increments followed by significant decreases sweeping from high to low altitude. The profiles of NOx from UARS-HALOE data show significant increases from 45 to 25 km, but in the case of O3, no statistically significant variations are observed